UPG’s battery tester accurately tests 12V AGM, GEL, SLA, SLI and VRLA batteries from 2Ah – 20Ah in seconds. With it’s easy to read multi-lingual, digital display, UPG’s tester shows state of charge and state of health and will test charged batteries as well as discharged batteries down to 1.5V. The tester is designed using a patented single load, dynamic resistance technology that minimizes battery drain during the load test. It’s compact in size and weighs only 1.25 lbs and it comes with a convenient carrying case. Works great for testing UPG’s SLA and Adventure Power batteries or any other brand sealed lead acid battery! Easy to read digital display: A. Good & Pass B. Good & Recharge C. Recharge and Retest D. Bad & Replace E. Bad Cell and Replace